JPH05253909A - Formation of pattern on surface of concrete and decorative mat used therefor - Google Patents

Abstract

PURPOSE:To transfer a stone pattern which is good in a surface finishing state and excellent in durability and has natural appearance on the surface of concrete. CONSTITUTION:The surface of a decorative mat 1 is formed into a transfer face 4 having an uneven pattern. Cement powder is stuck on the surface and treated to distributed colored particulate matters 6. The decorative mat 1 distributed with the colored particulate matters 6 is used and the transfer face 4 having the uneven pattern is held as a contact face. Concrete is placed on the transfer face 4 having the uneven pattern, cured and hardened. Thereafter the decorative mat 1 is peeled and the colored particulate matters 6 are transferred on the surface of formed concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern forming method for a concrete surface and a decorative mat used therefor.

[0002]

2. Description of the Related Art Conventionally, the following method has been used to form an uneven pattern expressed in color on the surface of concrete. That is, first, a hard urethane makeup mat (makeup frame) 12 as shown in FIG. 5 is prepared. The surface of the makeup mat 12 is formed as an uneven pattern transfer surface 13, and the back surface is formed as a flat surface 14. And
A mold release agent is applied to the above surface at the construction site, and then, as shown in FIG.
As shown in FIG. 5, the mold 16 is arranged at a predetermined interval. Next, the side opening (not shown) and the bottom opening of the mold 16 and the mat 12 are closed by the plate material 17 and the like, and the concrete material 15 is poured from the upper opening. Then,
The concrete material 15 is cured and hardened to form a concrete plate. Thereafter, the mat 12 is peeled off from the concrete plate 18 as shown in FIG. The concavo-convex pattern of the decorative mat 12 is transferred onto the surface of the concrete plate 18 thus obtained. Then, coating is applied to the uneven pattern surface by spraying or the like to complete the natural pattern uneven pattern.

[0003]

However, since many of the paints used for the above-mentioned paints are organic paints, the paints are prone to discoloration and fading, and the organic materials in the paints are easily deteriorated. It is inferior in long-term durability as compared with the one formed by patterning using the material (for example, natural stone). Therefore, it is necessary to repaint the uneven surface that has been painted after a certain period of time, and this repainting (refresh)
A large amount of cost is required for maintenance of the above.

Therefore, a decorative mat made by adhering natural stone particles or glass particles to the surface of the mold with a water-soluble adhesive is used, and a concrete material is placed with the surface of the decorative mat as a contact surface to cure and cure. Then, a method has been proposed in which the mat is peeled from the surface of the generated concrete, the natural stone particles and the like are transferred and embedded in the surface of the concrete, and the water-soluble adhesive is washed off with water (JP-A-56-169189). However, this method has a drawback that fine air bubbles remain on the surface of the decorative mat when the concrete material is cast on the surface of the decorative mat, and this appears as microscopic depressions on the surface of the generated concrete, resulting in a poor finished state of the concrete surface. There is a drawback. In particular, this defect is remarkable when the surface of the decorative mat is formed as a concavo-convex pattern surface.

The present invention has been made in view of the above circumstances, and a pattern forming method capable of transferring and forming a natural stone pattern or the like, which has a good surface finish and is excellent in durability, onto a concrete surface, and to use it. The purpose is to provide a makeup mat.

[0006]

In order to achieve the above-mentioned object, the present invention provides a decorative mat having colored particles distributed on its surface, and pours concrete material with the surface as a contact surface. , A method of peeling off the decorative mat after curing and transferring and embedding the colored granules on the surface of the generated concrete, wherein the decorative mat having an uneven pattern is used as the colored granules. The first gist is a pattern forming method for concrete surface using cement powder adhesion treatment, and the surface is formed on an uneven pattern transfer surface, and the cement powder adheres to the surface on this surface. A second aspect is a makeup mat in which is distributed.

[0007]

That is, according to the present invention, a decorative mat having a surface on which colored granules, which have been subjected to a cement powder adhesion treatment, are distributed and formed, and a concrete material is cast with the surface of the mat as a contact surface. Therefore, even when fine air bubbles remain on the surface of the mat when the concrete material is cast, the cement powder adhering to the colored particles absorbs water and destroys the fine air bubbles. Therefore, the finished concrete surface has a smooth finish. In particular, this effect becomes remarkable when an uneven pattern is transferred and formed on the surface of the generated concrete.

Next, the present invention will be described in detail.

The present invention uses a colored granular material which has been subjected to an adhesion treatment of cement powder and, if necessary, an adhesion treatment of a coloring material, and a decorative mat on which the colored granules are distributed on the surface of an uneven pattern, so that the concrete surface is naturally adjusted. The uneven pattern of is transferred and formed.

As the colored granules, crushed natural stone particles, ceramic particles, glass particles and the like are used. Particularly preferable among the crushed natural stone particles is the use of crushed natural stone particles of various colors, either alone or in combination. As the colored particles, for example, particles having a particle size (A) of 5 mm or less are preferably used. In this case, the particle size distribution is 70 to 3 when 0 <A ≦ 0.5 mm.
0% (weight basis, same below), 0.5 <A ≦ 2.5m
It is preferable that m is 30 to 70% and 2.5 <A ≦ 5 mm is 0 to 10%.

The cement powder adhered to the colored particles is not particularly limited, and various kinds of cement powder can be used. In this case, it is preferable to use an average particle diameter of 0.5 mm or less, preferably 1 to 10 μm, and more preferably 2 to 5 μm. The cement powder includes
Other water-absorbing inorganic powder such as gypsum may be mixed. It does not matter if these other inorganic powders make up most of them. In the present invention, these are also included in the cement powder.

The adhesion treatment of such cement powder to the colored granules is not particularly limited. For example, the colored granules may be slightly moistened and put in cement powder to be stirred, or the cement powder may be sprayed from a nozzle onto the colored granules.

In addition to the above-mentioned cement powder, a coloring material may be appropriately applied to the above colored granules, if necessary, in order to express a natural feeling similar to natural stone.

As the coloring material, it is preferable to use an inorganic pigment having excellent durability without fear of discoloration, fading, deterioration and the like, and examples thereof include metal oxides such as Fe ₂ O ₃ and CrO ₃ . It is preferable to use three or more kinds of the above-mentioned coloring materials in combination so that uneven coloring is generated and the surface of the generated concrete is more similar to natural stone. Further, it is preferable to use the colorant having an average particle diameter of 0.5 to 1 μm.

The adhesion treatment of the coloring material to the colored particles is not particularly limited. For example, there may be mentioned a method in which the surface of the colored granular material is triboelectrically charged by high-speed rotary mixing to perform an adhesion treatment.

The decorative mat on which the colored particles are distributed is
For example, a hard urethane foam resin is used. For example, the mat is made of a hard urethane foam, one surface of which is formed as a concave-convex pattern transfer surface that contacts the concrete material to transfer the concave-convex pattern to the concrete surface, and the other surface of which is formed as a flat surface. The existing one is used. Such a decorative mat is manufactured by injecting a liquid urethane foam resin into a mold having an uneven pattern opposite to the above-mentioned uneven pattern and curing it, and the inside is a foam layer and the surface in contact with the mold uneven pattern is dense. Is formed on the integral skin layer. This integral skin layer is formed densely and densely with substantially no bubbles, and has excellent surface smoothness. The uneven pattern transfer surface is formed on the smooth surface of the integral skin layer.

On the surface of the decorative mat having such an uneven pattern, the above-mentioned cement powder is subjected to the adhesion treatment, and if necessary, the coloring particles to which the coloring agent is adhered are distributed. Usually, the colored granules are distributed via an adhesive or an adhesive. As this type of pressure-sensitive adhesive or adhesive, it is preferable to use one that reduces or disappears the pressure-sensitive adhesive force or the like due to water, alkali components, etc. in the concrete material.
Examples of the adhesive whose adhesive force is reduced or disappears when it meets moisture in the concrete material include methyl cellulose adhesive, polyvinyl alcohol adhesive, and water glass. As a material that reduces or disappears the adhesive force or the like when it meets the alkaline component in the concrete material, for example, a two-component acrylic adhesive or the like can be mentioned. As a method for distributing the colored granules on the surface of the decorative mat via the pressure-sensitive adhesive or the like, the colored granules are distributed on the surface of the decorative mat in a predetermined pattern, and then a solution of the pressure-sensitive adhesive is applied. Spray the entire surface or pre-form an adhesive layer on the surface of the makeup mat, and distribute the colored granules on this adhesive layer in a predetermined pattern to utilize the adhesive strength of the adhesive. The adhesive layer is partially or completely embedded in the pressure-sensitive adhesive layer. Paraffin, clay, rubber, resin, etc. are used in place of the above-mentioned pressure-sensitive adhesive, and these are applied, and then the above-mentioned colored particles are distributed so as to have a predetermined pattern, and if necessary, partially embedded, etc. You may do it. When the surface itself of the makeup mat has adhesiveness, the above-mentioned adhesive and the like are not always necessary.

In the present invention, using the above decorative mat, an uneven pattern such as a stone wall made of natural stone is formed on the concrete surface as follows. That is, the surface of the decorative mat on which the uneven pattern is transferred is used as a contact surface for the concrete surface, a concrete material is cast and cured to cure, and then the decorative mat is peeled from the surface of the produced concrete. By this series of steps, the colored particles on the decorative mat are transferred and embedded in the concrete surface, and at the same time, the concrete surface is formed into an uneven pattern surface by transferring the uneven pattern surface of the decorative mat surface. In this case, for fixing the colored granules to the decorative mat, if a material whose adhesive strength is reduced due to water content in the concrete material is used, during curing and curing of the concrete material, the water content of the concrete material causes Since the adhesive force of the adhesive layer fixing the colored granules to the decorative mat is weakened or disappears, the decorative mat can be easily peeled from the concrete surface. In this way, the colored particles are partially or wholly embedded in the concrete surface, and together with the transferred unevenness of the uneven pattern surface, the concrete surface becomes a stone wall made of natural stone, which is very similar to the real thing. Moreover, residual fine air bubbles on the concrete surface generated when pouring concrete material are removed by the cement powder adhering to the colored granules, and fine recesses due to residual fine air bubbles are not formed, resulting in a good finish on the concrete surface. It becomes a state.

[0019]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a decorative mat having colored particles distributed on its surface is prepared, and a concrete material is cast with the surface as a contact surface, and after curing and curing, the above-mentioned decorative mat is used. A method of transferring and embedding the colored granules onto the surface of the generated concrete, wherein the decorative mat having an uneven pattern formed on the surface is used, and cement powder is adhered to the colored granules. Since, when the concrete material is subjected to adhesion treatment as necessary, even when fine air bubbles remain on the mat surface when the concrete material is cast, the cement powder adhering to the colored granules absorbs water and Destroys and eliminates fine air bubbles. Therefore, the finish of the generated concrete surface becomes smooth. In particular, this effect becomes remarkable when an uneven pattern is transferred and formed on the surface of the generated concrete. Further, according to the makeup mat of the present invention, transfer formation of the above pattern can be easily performed. Further, by applying the coloring material adhesion treatment to the colored granules, it becomes possible to express a natural feeling more similar to natural stone.

Next, examples will be described.

[0021]

Example 1 FIG. 1 shows an example of a decorative mat of the present invention. This decorative mat 1 is made of a rigid urethane foam resin, and has a foam layer 2 inside as in a conventionally known decorative mat.
Is equipped with an integral skin layer 3 on the surface layer,
One surface is formed as a smooth uneven pattern transfer surface 4, and the other surface is formed as a flat back surface 7. A water-soluble methylcellulose adhesive is applied to the uneven pattern transfer surface 4 to form an adhesive layer 5 having a thickness of 0.1 to 5 mm. This adhesive layer 5
A large number of colored crushed stone particles 6 of natural stone to which the cement powder has been adhered are adhered by pressure spraying. Using such a decorative mat 1, a concrete material 15 is cast, cured and cured by a conventionally known method as shown in FIG. In FIG. 2, 16 is a mold, and 17 is a plate material that closes the opening. Next, as shown in FIG. 3, the decorative mat 1 is peeled off from the generated concrete board 18. At the time of this peeling, since the adhesive layer 5 made of water-soluble methyl cellulose has dissolved and disappeared in the water in the concrete material,
The makeup mat 1 can be easily peeled off. The concrete plate 18 thus obtained had a marble-like color expression in which the colored crushed stone particles 6 of the natural stone were distributed on the uneven surface 8 thereof.

[0022]

Example 2 Instead of the methyl cellulose adhesive of Example 1 above, a two-component acrylic pressure-sensitive adhesive was used. Other than that, a decorative mat was formed in the same manner as in Example 1 above, and a concrete board was produced in the same manner as in Example 1 above. The obtained concrete board had a marble-like color expression in which colored crushed stone particles of natural stone were distributed on the uneven surface.

[0023]

Example 3 As shown in FIG. 4, cement powder 10 and Fe ₂ O ₃ powder 11 having an average particle diameter of 0.8 μm as an adhering treatment were used on the outer peripheral surface of a colored crushed stone 9 of natural stone. This was adhered and distributed on the surface of the decorative mat.
Other than that, a decorative mat was formed in the same manner as in Example 1 above, and a concrete board was prepared in the same manner as in Example 1 above. The obtained concrete board had a color expression remarkably similar to that of a natural marble-like stone in which colored crushed stone particles of natural stone were distributed on the uneven surface.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a makeup mat of the present invention.

FIG. 2 is an explanatory diagram showing a pattern forming method using the decorative mat.

FIG. 3 is an explanatory view showing a state where a concrete plate is released.

FIG. 4 is an explanatory view showing a colored granular material according to an embodiment of the present invention.

FIG. 5 is an explanatory view showing an example of a conventional makeup mat.

FIG. 6 is an explanatory view showing a pattern forming method using the conventional makeup mat.

FIG. 7 is an explanatory view showing a state where a concrete plate is released.

[Explanation of symbols]

 1 Makeup mat 4 Transfer surface of uneven pattern 6 Colored crushed stone particles

Claims (6)

[Claims] 1. A decorative mat having colored particles distributed on its surface is prepared, a concrete material is cast with the surface as a contact surface, and after curing and curing, the decorative mat is peeled off to obtain the colored particles. A method of transferring and embedding to a surface of generated concrete, characterized in that the decorative mat has an uneven pattern formed on the surface thereof, and the colored granules have cement powder adhesion treatment. Pattern forming method for concrete surface. 2. The pattern forming method for a concrete surface according to claim 1, wherein the colored granular material is distributed on the surface of the decorative mat through an adhesive layer whose adhesive force is reduced by moisture in the concrete material. .. 3. The pattern forming method for a concrete surface according to claim 1, wherein the colored granules are fine granules having a particle diameter of 2.5 mm or less. 4. The method for forming a pattern on a concrete surface according to claim 1, wherein the colored granules have been subjected to a coloring agent adhesion treatment. 5. A cosmetic mat, wherein a surface is formed on a surface for transferring a concavo-convex pattern, and colored particles having cement powder adhered to the surface are distributed on the surface. 6. The decorative mat according to claim 5, wherein the colored granules have been subjected to a coloring agent adhesion treatment.